One servant cannot serve two masters.
You cannot become a believer of two deities at the same time.
Similarly, the role of an inheritor is also exclusive.
You cannot become the inheritor of two Pseudo-God Stone Sculptures simultaneously.
However, the roles of inheritor and servant can coexist, just like Deng Yuxiang!
She is both the genuine embodiment of the Pseudo-God Night Charm (Inheritance Contract) and an Immortal Sheep Believer (Master-Servant Contract).
Of course, for these two contracts to coexist in one person, the "master" in the Master-Servant Contract must be a True God with a divine position in the world.
The Stone Sculptures within Lu Ran's Sculpture Garden are all Pseudo-Gods, not qualified and exclusive.
These are what Lu Ran dares to try and can try.
Taking Deng Yuxiang as an example, it's precisely because she worships the Divine·Immortal Goat that Lu Ran dares to make her the Pseudo-God Night Charm.